package com.itheima.web.controller;

import com.itheima.service.system.UserService;
import com.itheima.service.system.impl.UserServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.Method;

public class BaseServlet extends HttpServlet {
    protected UserService userService;

    @Override
    public void init() throws ServletException {
        userService = new UserServiceImpl();
    }

    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        try {
            String operation = req.getParameter("operation");
            Class aClass = this.getClass();
            Method method = aClass.getMethod(operation, HttpServletRequest.class, HttpServletResponse.class);
            method.invoke(this, req, resp);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
